CA certificate check bypass with X509_V_FLAG_X509_STRICT (OpenSSL OpenSSL)
At a glance
- Source
- NVD
- EPSS
- EPSS 18.34 % · percentile 97 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- openssl
- NVD status
- Modified
Description
The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check. An error in the implementation of this check meant that the result of a previous check to confirm that certificates in the chain are valid CA certificates was overwritten. This effectively bypasses the check that non-CA certificates must not be able to issue other certificates. If a "purpose" has been configured then there is a subsequent opportunity for checks that the certificate is a valid CA. All of the named "purpose" values implemented in libcrypto perform this check. Therefore, where a purpose is set the certificate chain will still be rejected even when the strict flag has been used. A purpose is set by default in libssl client and server certificate verification routines, but it can be overridden or removed by an application. In order to be affected, an application must explicitly set the X509_V_FLAG_X509_STRICT verification flag and either not set a purpose for the certificate verification or, in the case of TLS client or server applications, override the default purpose. OpenSSL versions 1.1.1h and newer are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1h-1.1.1j).
Weaknesses (CWE)
- CWE-295 — Improper Certificate Validation
References
- https://www.openssl.org/news/secadv/20210325.txt
- https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=2a40b7bc7b94dd7de897a74571e7024f0cf0d63b
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd
- http://www.openwall.com/lists/oss-security/2021/03/27/1
- http://www.openwall.com/lists/oss-security/2021/03/27/2
- http://www.openwall.com/lists/oss-security/2021/03/28/3
- http://www.openwall.com/lists/oss-security/2021/03/28/4
- https://security.gentoo.org/glsa/202103-03
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CCBFLLVQVILIVGZMBJL3IXZGKWQISYNP/
- https://www.oracle.com/security-alerts/cpuApr2021.html
- https://www.tenable.com/security/tns-2021-09
- https://security.netapp.com/advisory/ntap-20210326-0006/
- https://security.FreeBSD.org/advisories/FreeBSD-SA-21:07.openssl.asc
- https://www.tenable.com/security/tns-2021-05
- https://kc.mcafee.com/corporate/index?page=content&id=SB10356
- https://www.tenable.com/security/tns-2021-08
- https://mta.openssl.org/pipermail/openssl-announce/2021-March/000198.html
- https://www.oracle.com//security-alerts/cpujul2021.html
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0013
- https://www.oracle.com/security-alerts/cpuoct2021.html
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://www.oracle.com/security-alerts/cpujul2022.html
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N | NVD · nvd@nist.gov (Primary) |
| CVSS 2.0 | MEDIUM 5.8 | AV:N/AC:M/Au:N/C:P/I:P/A:N | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2021-1641
- GCVE · GCVE-0-2021-3450
CERT-FR advisories
- CERTFR-2023-AVI-0051 — Multiples vulnérabilités dans les produits Juniper · cert.ssi.gouv.fr
- CERTFR-2022-AVI-216 — Multiples vulnérabilités dans les produits Siemens · cert.ssi.gouv.fr
- CERTFR-2021-AVI-952 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2021-AVI-912 — Multiples vulnérabilités dans IBM Qradar · cert.ssi.gouv.fr
- CERTFR-2021-AVI-791 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
- CERTFR-2021-AVI-784 — Multiples vulnérabilités dans les produits Microsoft · cert.ssi.gouv.fr
- CERTFR-2021-AVI-559 — Multiples vulnérabilités dans Oracle PeopleSoft · cert.ssi.gouv.fr
- CERTFR-2021-AVI-558 — Multiples vulnérabilités dans Oracle MySQL · cert.ssi.gouv.fr
- CERTFR-2021-AVI-540 — Multiples vulnérabilités dans les produits SonicWall · cert.ssi.gouv.fr
- CERTFR-2021-AVI-395 — Multiples vulnérabilités dans IBM Spectrum Control · cert.ssi.gouv.fr
- CERTFR-2021-AVI-374 — Multiples vulnérabilités dans Tenable Nessus · cert.ssi.gouv.fr
- CERTFR-2021-AVI-298 — Multiples vulnérabilités dans Oracle Virtualization · cert.ssi.gouv.fr
- CERTFR-2021-AVI-297 — Multiples vulnérabilités dans Oracle Java SE · cert.ssi.gouv.fr
- CERTFR-2021-AVI-296 — Multiples vulnérabilités dans Oracle MySQL · cert.ssi.gouv.fr
- CERTFR-2021-AVI-247 — Multiples vulnérabilités dans Tenable Nessus Agent · cert.ssi.gouv.fr
- CERTFR-2021-AVI-235 — Multiples vulnérabilités dans les produits Tenable · cert.ssi.gouv.fr
- CERTFR-2021-AVI-221 — Multiples vulnérabilités dans OpenSSL · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*≥ 1.1.1h < 1.1.1kcpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:*cpe:2.3:o:freebsd:freebsd:12.2:p1:*:*:*:*:*:*cpe:2.3:o:freebsd:freebsd:12.2:p2:*:*:*:*:*:*cpe:2.3:o:netapp:santricity_smi-s_provider_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:netapp:storagegrid_firmware:-:*:*:*:*:*:*:*cpe:2.3:o:windriver:linux:-:*:*:*:cd:*:*:*cpe:2.3:o:windriver:linux:17.0:*:*:*:lts:*:*:*cpe:2.3:o:windriver:linux:18.0:*:*:*:lts:*:*:*cpe:2.3:o:windriver:linux:19.0:*:*:*:lts:*:*:*cpe:2.3:a:netapp:cloud_volumes_ontap_mediator:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*cpe:2.3:a:netapp:storagegrid:-:*:*:*:*:*:*:*cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*cpe:2.3:a:tenable:nessus:*:*:*:*:*:*:*:*≤ 8.13.1cpe:2.3:a:tenable:nessus_agent:*:*:*:*:*:*:*:*≥ 8.2.1 ≤ 8.2.3cpe:2.3:a:tenable:nessus_network_monitor:5.11.0:*:*:*:*:*:*:*cpe:2.3:a:tenable:nessus_network_monitor:5.11.1:*:*:*:*:*:*:*cpe:2.3:a:tenable:nessus_network_monitor:5.12.0:*:*:*:*:*:*:*cpe:2.3:a:tenable:nessus_network_monitor:5.12.1:*:*:*:*:*:*:*cpe:2.3:a:tenable:nessus_network_monitor:5.13.0:*:*:*:*:*:*:*cpe:2.3:a:oracle:commerce_guided_search:11.3.2:*:*:*:*:*:*:*cpe:2.3:a:oracle:enterprise_manager_for_storage_management:13.4.0.0:*:*:*:*:*:*:*cpe:2.3:a:oracle:graalvm:19.3.5:*:*:*:enterprise:*:*:*cpe:2.3:a:oracle:graalvm:20.3.1.2:*:*:*:enterprise:*:*:*cpe:2.3:a:oracle:graalvm:21.0.0.2:*:*:*:enterprise:*:*:*cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:*< 9.2.6.0cpe:2.3:a:oracle:jd_edwards_world_security:a9.4:*:*:*:*:*:*:*cpe:2.3:a:oracle:mysql_connectors:*:*:*:*:*:*:*:*≤ 8.0.23cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:*≤ 8.0.23cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*≤ 5.7.33cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*≥ 8.0.15 ≤ 8.0.23cpe:2.3:a:oracle:mysql_workbench:*:*:*:*:*:*:*:*≤ 8.0.23cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:*:*:*:*:*:*:*:*≥ 8.57 ≤ 8.59cpe:2.3:a:oracle:secure_backup:*:*:*:*:*:*:*:*< 18.1.0.1.0cpe:2.3:a:oracle:secure_global_desktop:5.6:*:*:*:*:*:*:*cpe:2.3:a:oracle:weblogic_server:12.2.1.4.0:*:*:*:*:*:*:*cpe:2.3:a:oracle:weblogic_server:14.1.1.0.0:*:*:*:*:*:*:*cpe:2.3:a:mcafee:web_gateway:8.2.19:*:*:*:*:*:*:*- +13 more
Affected products
| Product | Versions |
|---|---|
| OpenSSL · OpenSSL | affected Fixed in OpenSSL 1.1.1k (Affected 1.1.1h-1.1.1j) |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |